White Ash

General
Scientific Name: Fraxinus americana
Family: Oleaceae (Olive)
Hardiness: Zone 4
Leaves: Deciduous
Plant Type: Tree
Growth
Rate: Medium
Mature Height: >45’
Longevity: Long
Power Line: No
Ornamental
Flowers: Inconspicuous
Fruit: Tan samara
Fall Color: Purple

Large tree native to eastern North America as far west as northern Wisconsin and eastern Minnesota and Nebraska. Interest continues in ash species for hardy selections, pest resistance and aesthetic and structural values. Its purple fall color is adds an unexpected hue to the fall foliage palette.

Light: Full sun.
Water: Prefers moist, well drained soils.
Soil: Adaptable to a wide variety of soils except rocky or droughty.

Although this tree is generally adapted to North Dakota, it is not currently recommended due to its susceptibility to emerald ash borer (EAB). As of May 2022, EAB has not been found in North Dakota, though it is found in central Minnesota, Sioux Falls, SD, and in Winnipeg, Manitoba.

Many varieties are available including several adapted to the North Dakota and Minnesota such as Northern Blaze® and ‘Autumn Blaze’.

Credits: North Dakota Tree Selector Website, Manual of Woody Landscape Plants 6th edition.